Starting and finishing in Georgian London, this trail round the City and the City Fringes takes you from historic buildings to 21st century tower blocks, past historic churches, via impressive art collections and the world's biggest city museum.

The curator of the brilliant Atkinson Grimshaw: Painter of Moonlight show at the Guildhall Art Gallery tells us about a painting which is debuting at the London venue and has barely a hint of moonshine in sight.